I cannot speak for REST API but internally, the "Released" date is going to be related to the associated lifecycle and the last transition to the Released state. This can be different than last modified so you don't want that. You have to join to the Lifecycle History table, Released state and look for the Persisted Info like Created on.
You got me exactly. I want the persist info for Released state for the object. I was wondering as it is a common requirement for different organizations to know when their objects were released in the system, there should be an OOTB REST API for this.
Understand that not every company uses the same lifecycle Released as the final state. It can vary at each site but most use basic OOTB stuff.
I’ve written customization to determine when an object’s state was changed to X state. And when object’s previous state was changed.
I could have missed something but I found no OOTB API to do this and wrote my own code.
How do you want to use the date? If you just want to display the date on say the object's information page, there is documentation to create an alias attribute to show the date an object's promotion or change notice date was completed
I was looking for a REST API solution to fetch this